Manhattan • Warehouse

510 West 21 St

Manhattan, NY 10011Company-ownedBBL 1006920041BIN 1012299

Updated Aug 1, 2026 · 16 sources

Year Built1928
Floors8
Units2
Building Area124,385 sqft
ZoningM1-5
ClassE7
Market Value$25M

510 WEST 21 ST is a property located at 510 WEST 21 ST, Manhattan, NY 10011. It is classified as a warehouse - self-storage. The building was constructed in 1928. It has 8 floors and 2 units. The building area is 124,385 square feet on a 13,800 sqft lot. The property is zoned M1-5. The assessed market value is $25M. It last sold for $95.2M on Dec 16, 2021. Public records list the property as company-owned. There are 101 building permits on record (71 active). There are 73 violations on record (13 currently open). 9 docketed judgments carrying $3,900 in open balances are on record with OATH. Data sourced from NYC Department of Buildings (DOB), Housing Preservation & Development (HPD), Department of Finance (DOF), and other government agencies.

A RegWatch Dossier

345records on file

Completed in 1928, 510 West 21 St rises 8 stories over New York. Public records put it at 2 units and 124,385 square feet of floor area, on land zoned M1-5. It is carried on the public rolls at a market value of $25.0M, and assessed for tax at $11.2M. In the 54 years its record reaches back, the lot has drawn 345 separate government filings.

The documentary life of the address leans hard toward permit: 101 of its 345 records, fully 29%, fall under that one heading. Violation (73) and enforcement (56) trail well behind. 13 violations stand open against it today.

The pace is anything but even. The early decades pass in near silence; the filings cluster heavily in recent years, peaking in 2018.

On the environmental ledger, the building is benchmarked under Local Law 84, with a site energy-use intensity of 15.1 kBtu per square foot. Its operations answer for roughly 149 metric tons of CO2-equivalent a year.

Read together — 29% permit, 54 years of accumulation, a parcel of New York — these scattered records compose a portrait of the address that no single page sets out to draw.

$25.0M of New York, written across 345 government filings.

Property Details

Address510 WEST 21 ST, Manhattan, NY 10011
Building TypeWarehouse - Self-Storage
E7
Year Built1928
Floors8
Total Units2
Building Area124,385 sqft
Lot Size13,800 sqft
ZoningM1-5
1006920041
1012299
OwnershipCompany-owned

Assessment & Sales

$25M
$11.2M
$1.2M
$95.2M
Last Sale DateDec 16, 2021

Building Permits

101 on record · 71 active
General ConstructionDOB NOW
PERMIT ISSUED
Filed Jul 7, 2026Est. cost $131KJob #M01360335-I1
General ConstructionDOB NOW
APPROVED
Filed Apr 14, 2026Est. cost $131KJob #M01360335-I1
General ConstructionDOB NOW
QA FAILED
Filed Mar 6, 2026Est. cost $1Job #M01355361-I1
Suspended ScaffoldDOB NOW
PERMIT ISSUED
Filed Feb 17, 2026Job #M01284347-I1
General ConstructionDOB NOW
PERMIT ENTIRE
Filed Feb 17, 2026Job #M01284347-I1

+ 96 more permitsview full report

Violations

73 on record · 13 open
Open judgment balance — docketed OATH judgments$3,900
Judgments · 9 docketed
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Feb 28, 2026Balance $2,000Ticket #014207196P
INSPECTION AND TESTING
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Feb 28, 2025Balance $600Ticket #014103877Y
INSPECTION AND TESTING
DEP summons (OATH)JUDGMENT DOCKETED
Docketed Sep 30, 2024Balance $1,300Ticket #000800632L
IDLING OF MOTOR VEHICLE ENGINE MORE THAN THREE MINUTES 1ST OFF
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Jan 31, 2018Ticket #012067421H
FIRE PROTECTION SYSTEMS:FAIL TO PREVENT UNNECESSARY UNWARRANTED ALARMS
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Apr 11, 2008Ticket #010962493P
FAILED TO PROVIDE SIGN POSTING INSTRUCT

+ 4 more docketed judgmentsview full report

DOB LegacyACC1
ACTIVE
Issued Sep 6, 2019#2384101

VIO ISSUED TO ELEVATOR - FAIL TO CORRECT DEFECTS ON 2017 CAT 1 INSP/TST TST

View this violation's full details & status history →
DOB LegacyACC1
ACTIVE
Issued Sep 6, 2019#2384102

VIO ISSUED TO ELEVATOR - FAIL TO CORRECT DEFECTS ON 2017 CAT 1 INSP/TST TST

View this violation's full details & status history →
DOB LegacyACC1
ACTIVE
Issued Jan 26, 2018#2233499

VIO ISSUED TO ELEVATOR - FAIL TO CORRECT DEFECTS ON 2016 CAT 1 INSP/TST

View this violation's full details & status history →
DOB LegacyACC1
ACTIVE
Issued Jan 26, 2018#2233500

VIO ISSUED TO ELEVATOR - FAIL TO CORRECT DEFECTS ON 2016 CAT 1 INSP/TST

View this violation's full details & status history →
DOB LegacyACC1
ACTIVE
Issued Jan 3, 2017#2122814

VIO ISSUED TO ELEVATOR - FAIL TO CORRECT DEFECTS ON 2015 CAT 1 INSP/TST

View this violation's full details & status history →

+ 68 more violations on record — view full report

Get the Complete Report for 510 WEST 21 ST

Title history, detailed tax records, environmental data, zoning analysis, and more from 250+ government sources.

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Frequently Asked Questions

When was 510 WEST 21 ST, Manhattan built?

The building at 510 WEST 21 ST, Manhattan, NY 10011 was constructed in 1928. It is classified as a warehouse - self-storage with 8 floors and 2 units. The building area is 124,385 sqft.

Are there building permits at 510 WEST 21 ST, Manhattan?

Yes. 510 WEST 21 ST, Manhattan, NY 10011 has 101 building permits on record, with 71 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a General Construction (PERMIT ISSUED) filed Jul 7, 2026.

Does 510 WEST 21 ST, Manhattan have violations?

Yes. 510 WEST 21 ST, Manhattan, NY 10011 has 73 violations on record, with 13 currently open. Breakdown: 58 DOB, 15 ECB. Sources: NYC DOB, HPD, and ECB/OATH.

Does 510 WEST 21 ST, Manhattan have docketed judgments?

Yes. 510 WEST 21 ST, Manhattan, NY 10011 has 9 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH), with an open balance of $3,900. A docketed judgment is an enforceable money judgment entered by OATH after a hearing on a summons issued at this property; where the respondent is the property owner it can attach to the property as a lien.

What is the property tax assessment for 510 WEST 21 ST?

510 WEST 21 ST, Manhattan, NY 10011 has an assessed market value of $25M and a total assessed value of $11.2M (land: $1.2M). Assessment data is from the NYC Department of Finance (DOF).

When was 510 WEST 21 ST last sold?

510 WEST 21 ST, Manhattan, NY 10011 last sold for $95.2M on Dec 16, 2021. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

What is the zoning for 510 WEST 21 ST?

510 WEST 21 ST, Manhattan, NY 10011 is zoned M1-5. Zoning data is from the NYC Department of City Planning (DCP). For detailed FAR, overlays, and development rights, view the full property report on RegWatch.

Who owns 510 WEST 21 ST?

510 WEST 21 ST, Manhattan, NY 10011 is company-owned according to public records. Ownership data is from NYC Department of Finance assessment rolls. View the current owner of record and registered contacts in the full property report on RegWatch.

How do I get a full property report for 510 WEST 21 ST?

Search 510 WEST 21 ST on RegWatch to see its public record free — violations, permits, tax records, zoning, environmental data, and more from 250+ government sources, no credit card required. A Full Analysis report adds the complete title history, owner contacts, and a downloadable PDF.

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510 WEST 21 ST, Manhattan, NY 10011 — Property Records, Permits, Violations, Tax & Zoning | RegWatch